Atomizing method for making forms and containers from fibrous cohesive substances.



J. P. RAYMOND.

ATOMIZING METHOD FOR MAKING FORMS AND CONTAINERS FROM FIBROUS COHESIVE SUBSTANCES. APPLICATION FILED MAR. 5, 1918.

1,284,926., Patented Nov. 12,1918.

INVENTOR. JUHN F. RHYME/VD mwalw A ORNE Y JOHN P. moan, on S CISCO, CALIFORNIA.

A'IODIG METHOD FOR MAKDTG FORMS CONTAINERS FROM FIBROUS COHESIVE I SUBSTANCES.

er a of Letters Patent Patented Nov. 112, 1918.

Application filed March 5, 1918. 'Serial No. 220,566.

To all whom it may concern: 7

Be it known that I, Jomv P. Ramona, a citizen of the United States, and a resident of the city and county of San Francisco and State of California, have invented an Improvement in an Atomizing Method for Making Forms and Containers from Fibrous Cohesive Substances; and I do hereby declare the following to be a full, clear, and exact description of my invention, such as Will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an atomizing method of making forms and containers from any suitable fibrous cohesive sub- Ttgnces, such as wood or paper pulp and the The objects of my invention are to facilitate the manufacture of the said forms and containers; to improve the same; and to reduce the cost thereof.

My method consists of a series ofoperations which culminate in the production of the forms and containers.

In order that my invention may be clearly understood and readily practised the same is described with reference to the accompanying drawings, in which similar numerals indicate like parts.

The figure which is a side elevatiotn, partly broken away and partly in section, trates one means which may be employed for carrying into efiect the within described method. The same also shows the molds in open position, and containers, each in dotted lines.

A mixture of fibrous cohesive pulp and water drawn from a suitable reservoir, not shown in the drawings, is let into a pneumatic tank, 2, through a pipe, 3, partially filling the same, where it is constantly agitated by means of compressed air admitted through an inlet-pipe, 4, that portion of which within the tank is provided with perforations, 5, connecting with a conveniently located air compressor. The space in the tank above the level of the mixture is filled with compressed air which exerts a force downward on the liquid mixture. The mixture is then atomized and converted into a spray by means of a column of air expelled from the tank under compression through a nozzle, 8, and directed against a column of mixture expelled through a nozzle, 9, as the mixture leaves the tank also under compression. The said mixture thus converted illusinto a spray is conducted into separable porous molds, 6. As the compressed air seeks to escape through the innumerable pores in the molds it drives before it the articles of pulp in the atomized mixture, but as the pores in the molds are too small to permit the passage therethrough of the pulp particles the said pores are gradually lugged and alayer of pulp of uniform thic ess is gradually formed against the inner surfaces of the molds. The compressed air in seeking to escape will follow the line of least resistanceand as soon as one pore is closed will pass out through those pores still open, with the resultant action of plugging all pores alike. synchronously the action of the compressed air packs the ulp particles firmly against the molds and forces the water in the atomized mixture out through the pores in the molds. When the desired thickness of the layer of pulp thus roduced has been attained the supply 0 mixture is stopped, and the column of compressed air is shut ofl'. Connection is then established between the molds and a vacuum tank, 7, for the purpose of dislodging any pulp particles comprising the containers thus produced that might possibly have become so embedded in the molds as to interfere with efficient removal.

Having thus described my invention, what I desire to, claim and secure by Letters Patent, is:

1. The method of making fibrous forms and containers consistin of the steps, first, agitating a mixture 0 fibrous pulp and Water, second, atomizing a column of said mixture, and, third, in conducting into a, porous mold by the action of air pressure said atomized mixture for the purpose of forming a contiguous layer of pulp of any desired shape and thickness free from moisture.

2. The method of making fibrous forms and containers consisting of the steps, first, agitating a mixture of fibrous pulp and water, second, atomizing a column of said mixture, third, conducting into a porous mold by the action of air pressure said atomized mixture for the purpose of forming therein a contiguous layer of pulp of any desired shape and thickness free from moisture, and, fourth, in breaking any contact between said layer and said mold by the action of vacuum.

3. The method of making forms and containers from fibrous substances consisting of conducting under air pressure into a porous mold a previously agltated and atomized mixture of pulp and Water for the purpose of forming a hollow container of any desired shape and thickness.

4. The method of making forms and containers from fibrous substances consisting of conducting under pressure into a porous mold a previously agitated and atomized mixture of pulp and Water for the purpose of forming a hollow container of any desired shape and thickness, and then dislodging said container from said mold by' the atomizing said mixture by directing a' column of air under compression against a column of. said mixture also under compression, then forcing said atomized mixture under pressure into porous mold for the purpose of shaping therein the container and freeing the Water in the atomized mixture, and then breaking any contact between said container and said mold by the action of vacuum. v

7 The method of making fibrous forms and containers consisting in directing an air blast against a column of previously naaaeee agitated mixture of fibrous pulp and water for the purpose of atomizing said mixture, and then conducting said atomized mixture under air pressure into a porous mold for the purpose of shaping a continuous layer of pulp of any desired form and thickness free from moisture.

8. The method of making fibrous forms and containers consisting in directing an air blast against a colunm oi previously a itated mixture of fibrous pulp and water or the purpose of atomizing said mixture, and then conducting said atomized mixture under air pressure into a porous mold for the purpose of shaping therein a continuous layer of pulp of any desired form and thickness free from moisture, and then dislodgingsaid layer of pulp from said mold by the action of vacuum.

9. The method of making fibrous forms and containers consisting of conducting into a porous mold by the action of air pressure an atomized mixture of fibrous pulp and water for the purpose of forming therein a continuous layer of pulp of any desired shape and thickness free from.

moisture.

10. The method of making fibrous forms and containers consisting of conducting into a porous mold by the action of air pressure an atomized mixture of fibrous pulp and water for the purpose of forming therein a continuous layer of pulp of any desired shape and thickness free from moisture, and then breaking any contact between said layer and said mold by the action of applied vacuum,

In testimony whereof I have hereunto affixed my signature.

. JOHN P. RAYMOND. 

